If you’re running a site that you hope to monetize, it is imperative to produce content that your audience likes. The difficulty comes in judging how your content is resonating with your readers. The Post Satisfaction plugin solved that problem for one of my clients.
Jason came to me a few years ago looking for a way to track the popularity and correctness of comments on his site. I developed a solution that was great for him and his users and it has lasted over 3 years now without modification.